Toshihiro Matsumura Home Page

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・Most of my papers including resenct working papers are downlodable here.
・Our institute has troubles in email system. At least 20, may be more, emails had not reached me. Sorry for the inconvinience.

announcement

・Fifth International Workshop on Mixed Oligopolies was held on 11/2 in 2019 at Chukyo University, organized by Yoshihiro Tomaru.
・Fourth International Workshop on Mixed Oligopolies was held on 10/6 in 2018 at Chonnam National University in Korea, organized by Sang-Ho Lee.
・Third International Workshop on Mixed Oligopolies was held on 3/24 in 2018 at Institute of Social Science, The University of Tokyo, in Japan.

Citation Metrics

from Web of Science, Core Collection, Clarivate Analytics

Total Articles in Publication List=115, Sum of the Times Cited=3497, h-index=31 (From Social Science Citation Index)
Ranked in most cited scientists in the field of Economics and Business March, 2014, July, 2019 (From Essential Science Indicators)

From Scopus, Elsevier

Total Articles in Publication List=121, Sum of the Times Cited=3882, h-index=33

From Google Scholar

Sum of the Times Cited=6624, h-index=42

From Semantic Scholar

Publications 186, h-index 40, Citations 5,543, Highly Influential Citations 343

From Research.com

D-index 39, Citations 5724. Publications 162, World Ranking 1870, National Ranking 9, (Economics and Finance)

Correspondence address

Institute of Social Science, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.

Research fields

Industrial Organization, Public Economics, Environmental and Energy Economics, Law and Economics, Regional Science

Work experience

Professor, Institute of Social Science, The University of Tokyo, April 2008 - Current
Associate Professor, Institute of Social Science, The University of Tokyo, October 1998 - March 2008
Associate Professor, Department of Social Engineering, Tokyo Institute of Technology, April 1996 - March 2001
Research Associate, Institute of Social and Economic Research, Osaka University, April 1994 - March 1996

Publications

dissertation

Doctoral dissertation Essays in Oligopoly with Endogenous Sequencing. (1996, The University of Tokyo)

Recent Discussion Papers

  1. Optimal energy-saving investments and Jevons paradox in duopoly markets, co-authored with Kosuke Hirose
  2. Payoff interdependence and welfare-improving location diversification, co-authored with Yi Liu
  3. Market transparency in a mixed oligopoly, co-authored with Lili Xu
  4. Welfare effects of common ownership in an international duopoly, co-authored with Yi Liu
  5. Common ownership among private firms and privatization policies, co-authored with Junichi Haraguchi
  6. Flexible privatization policy in free-entry markets, co-authored with Susumu Sato
  7. Firms' Costs, Profits, Entries, and Innovation under Optimal Privatization Policy , co-authored with Junichi Haraguchi

articles in refereed journals

    Forthcoming Papers

  1. Welfare improving common ownership in successive oligopolies: the role of the input market,
    forthcoming in Canadian Journal of Economics 57(2), 459-477, May 2024 (co-authored with X. Henry Wang and Chenhang Zeng).

    2. Published Papers in 2024

  2. Are fuel taxes redundant when an emission tax is introduced for life-cycle emissions?
    Economics Letters 241, 111842, August 2024 (co-authored with Hiroaki Ino)
    This is the revised version of our DP
  3. Tax versus regulations: Polluters' incentives for loosening industry emission targets,
    Energy Economics, 136, 107705, August 2024 (co-authored with Kosuke Hirose and Akifumi Ishihara)
    This is the revised version of our DP
  4. Welfare consequence of common ownership in a vertically related market,
    Journal of Industrial Economics 72(2), 996-1004, June 2024 (co-authored with Linfeng Chen and Chenhang Zeng).
  5. Welfare effects of common ownership in an international duopoly,
    Canadian Journal of Economics 57(2), 459-477, May 2024 (co-authored with Yi Liu).
    This is the revised version of our DP

    6. Published Papers in 2023

  6. Green transformation in oligopoly markets under common ownership,
    Energy Economics 126, 106892 October 2023 (co-authored with Kosuke Hirose).
    This is the revised version of our DP
  7. Common ownership in a delivered pricing duopoly.
    Journal of Economics 139(3), 191-208, August 2023 (co-authored with Nuowen Bai).
  8. Competition mode and common ownership in a mixed oligopoly,
    Manchester School 91(4), 306-319, July 2023 (co-authored with Lili Xu and Yidan Zhang).
    This is the revised version of our DP entitled `Cournot–Bertrand comparison under common ownership in a mixed oligopoly'

    9. Published Papers in 2022

  9. Common ownership and environmental corporate social responsibility,
    Energy Economics 114, 106269, October 2022 (co-authored with Kosuke Hirose).
    This is the revised version of our DP
  10. Welfare-reducing price competition under relative performance delegation with convex costs,
    Economic Modelling 112, 105871, July 2022 (co-authored with Lili Xu).
  11. Market competition and strategic choices of electric power sources under fluctuating demand,
    Resource and Energy Economics 68, 101280, May 2022 (co-authored with Hiroaki Ino and Norimichi Matsueda).
    This is the revised version of our DP
  12. Procurement of advanced inputs and welfare-reducing vertical integration,
    Journal of Economics 135(1), 255–283, April 2022 (co-authored with Chul-Hi Park and Sang-Ho Lee).
    This is the revised version of our DP
  13. Free entry under an output-cap constraint,
    Economics Letters 210, 110192, January 2022 (co-authored with Hiroaki Ino).
    This is the revised version of our DP

    Published Papers before 2022

    Microeconomics and Game Theory

  14. Free entry under common ownership ,
    Economics Letters195, 109489, October 2020 (co-authored with Susumu Sato).
    This is the revised version of our DP
  15. Welfare-improving effect of a small number of followers in a Stackelberg model,
    B.E. Journal of Theoretical Economics16(1), 243-265, January 2016 (co-authored with Hiroaki Ino).
  16. How many firms should be leaders? Beneficial concentration revisited,
    International Economic Review 53(4), 1323-1340, November 2012 (co-authored with Hiroaki Ino).
  17. Price leadership in a homogeneous product market,
    Journal of Economics 104(3), 199-217, November 2011 (co-authored with Daisuke Hirata).
  18. Collusion, agglomeration, and heterogeneity of firms,
    Games and Economic Behavior 72(1), 306-313, May 2011 (co-authored with Noriaki Matsushima).
  19. On the uniqueness of Bertrand equilibrium,
    Operations Research Letters 38(6), 533-535, November 2010 (co-authored with Daisuke Hirata).

    20. Environmental and Energy Economics

  20. Optimality of emission pricing policies based on emission intensity targets under imperfect competition,
    Energy Economics 98, 105238, June 2021 (co-authored with Hiroaki Ino)
    This is the revised version of our DP
  21. Promoting green or restricting gray? An analysis of green portfolio standards,
    Economics Letters 198, 109650, January 2021 (co-authored with Hiroaki Ino)
    This is the revised version of our DP
  22. A comparison between emission intensity and emission cap regulations,
    Energy Policy 137, February 2020, 111115 (co-authored with Kosuke Hirose).
  23. The equivalence of emission tax with tax-revenue refund and emission intensity regulation.
    Economics Letters 182, pp. 126-128, September 2019 (co-authored with Hiroaki Ino).
  24. Long-run welfare effect of energy conservation regulation.
    Economics Letters 154, 64-68, May 2017. (co-authored with Atsushi Yamagishi).

    25. Market Structure, Corporate Social Responsibility, and Non-Profit-Maximizing Objections

  25. Noncooperative and cooperative environmental corporate social responsibility,
    Journal of Institutional and Theoretical Economics 176(3), 549-571, September 2020 (co-authored with Kosuke Hirose and Sang-Ho Lee).
    This is the revised version of our earlier work entitled
    ``Environmental Corporate Social Responsibility as a Collusive Device''
  26. Corporate social responsibility and privatization policy in a mixed oligopoly.
    Journal of Economics 128(1), 67-89, September 2019 (co-authored with Seung-Leul Kim and Sang-Ho Lee).
  27. Environmental corporate social responsibility : A note on the first-mover advantage under price competition.
    Economics Bulletin 37(1), 214-221, January 2017 (co-authored with Sang-Ho Lee and Kosuke Hirose).
  28. Corporate social responsibility and endogenous competition structure.
    Economics Bulletin 36(4), 2117-2127, November 2016 (co-authored with Akira Ogawa).
  29. Corporate social responsibility or payoff asymmetry?: A study of an endogenous timing game,
    Southern Economic Journal 81(2), 457-473, October 2014 (co-authored with Akira Ogawa).
  30. Competitiveness and R&D competition revisited,
    Economic Modelling 31(1), 541-547, March 2013 (co-authored with Susumu Cato and Noriaki Matsushima).
  31. Competitiveness and stability of collusive behavior,
    Bulletin of Economic Research 64(s1), s22-s31, April 2012 (co-authored with Noriaki Matsushima).

    32. Mixed Oligopoly and Privatization of Public Enterprises

  32. Profit-enhancing entries in mixed oligopolies,
    Southern Economic Journal 88(1), 33-55, July 2021 (co-authored with Junichi Haraguchi)
    This is the revised version of our DP
  33. Endogenous public and private leadership with diverging social and private marginal costs,
    Manchester School 88(5), 699-730, September 2020 (co-authored with Junichi Haraguchi).
    This is the revised version of our DP
  34. The relationship between privatization and corporate taxation policies,
    Journal of Economics 133(1), 85-101, June 2021 (co-authored with Yi Liu and Chenhang Zeng)
  35. Implicit protectionism via state enterprises and technology transfer from foreign enterprises,
    Review of International Economics 28(3), 723-743, August 2020 (co-authored with Junichi Haraguchi).
  36. Optimal privatization policy with asymmetry among private firms,
    Bulletin of Economic Research 72(3), 213-224, July 2020 (co-authored with Junichi Haraguchi).
  37. Lack of commitment to future privatization policies may lead to worst welfare outcome,
    Economic Modelling 88, 181-187, June 2020 (co-authored with Junich Haraguchi).
    This is the revised version of our earlier work (discussion paper) entitled
    ``Multiple long-run equilibria in a free-entry mixed oligopoly''
  38. Shadow cost of public funds and privatization policies.
    North American Journal of Economics and Finance 50, 101026, November 2019 (co-authored with Susumu Sato).
  39. Mixed duopoly: Differential game approach.
    Journal of Public Economic Theory 21(4), 771-793, August 2019 (co-authored with Koichi Futagami and Kizuku Takao).
  40. Optimal production tax in a mixed market with an endogenous market structure.
    Manchester School 87(4), 578-590, July 2019 (co-authored with Susumu Cato).
  41. Comparing welfare and profit in quantity and price competition within Stackelberg mixed duopolies.
    Journal of Economics 126(1), 75-93, January 2019 (co-authored with Kosuke Hirose).
  42. Dynamic privatization policy.
    Manchester School 87(1), 37-59, January 2019 (co-authored with Susumu Sato)
  43. Optimal privatization and uniform subsidy policies: A note.
    Journal of Public Economic Theory 20(3), 416-423, August 2018 (co-authored with Ming Hsin Lin).
  44. Government-leading welfare-improving collusion.
    International Review of Economics and Finance 56, 363-370, July 2018 (co-authored with Junichi Haraguchi).
  45. Competitive pressure from neighboring markets and optimal privatization policy.
    Japan and The World Economy 46, 1-8, June 2018 (co-authored with Junichi Haraguchi and Shohei Yoshida).
  46. An analysis of entry-then-privatization model: Welfare and policy implications.
    Journal of Economics 123(1), 71-88, January 2018 (co-authored with Sang-Ho Lee and Susumu Sato).
  47. Optimal privatization policy in mixed Stackelberg duopolies.
    Arthaniti: Journal of Economic Theory and Practice 17(1), 1-14, 2018 (co-authored with Ming Hsin Lin).
  48. Endogenous timing in mixed duopolies with externality.
    Australian Economic Papers 56(4), 304-327, December 2017 (co-authored with Akira Ogawa).
  49. Inefficient but robust public leadership.
    Journal of Industry, Competition and Trade 17(4), 387-398, February 2017 (co-authored with Akira Ogawa).
  50. Privatization neutrality theorem in free entry markets.
    B.E. Journal of Theoretical Economics 17(2), June 2017 (co-authored with Yasunori Okumura).
  51. Ex-ante versus ex-post privatization policies with foreign penetration in free-entry mixed markets.
    International Review of Economics and Finance 50, 1-7, July 2017 (co-authored with Sang-Ho Lee and Lili Xu).
  52. Cournot-Bertrand comparison in a mixed oligopoly,
    Journal of Economics 117(2), 117-136, August 2016 (co-authored with Junichi Haraguchi).
  53. Mixed duopoly, location choice, and shadow cost of public funds,
    Southern Economic Journal 82(2), 416-429, October 2015 (co-authored with Yoshihiro Tomaru).
  54. Competition and privatization policies revisited: The payoff interdependence approach,
    Journal of Economics 116(2), 137-150, October 2015. (co-authored with Makoto Okamura).
  55. Optimal privatization and trade policies with endogenous market structure,
    Economic Record 91(294), 309-323, September 2015. (co-authored with Susumu Cato).
  56. Price versus quantity in a mixed duopoly with foreign penetration.
    Research in Economics 68(4), 338-353, December 2014. (co-authored with Junich Haraguchi).
  57. Mixed duopoly, product differentiation, and competition.
    Manchester School 81(5), 730-744, September 2013. (co-authored with Minoru Kitahara).
  58. Mixed duopoly, privatization, and subsidization with excess burden of taxation.
    Canadian Journal of Economics 46(2), 526-554, May 2013. (co-authored with Yoshihiro Tomaru).
  59. Long-run effects of tax policies in a mixed market.
    FinanzArchiv/Public Finance Analysis 69(2), 215-240, June 2013 (co-authored with Susumu Cato).
  60. Advertising competition in a mixed oligopoly.
    Economics Letters 119(2), 183-185, May 2013. (co-authored Takeaki Sunada).
  61. Privatization neutrality theorem revisited.
    Economics Letters 118(2), 324-326, February 2013 (co-authored Yasunori Okumura).
  62. Airport privatization and international competition,
    Japanese Economic Review 63(4), 431-450, January 2012 (co-authored with Noriaki Matsushima).
  63. Long-run effects of foreign penetration on privatization policies.
    Journal of Institutional and Theoretical Economics 168(3), 444-454, June 2012 (co-authored with Susumu Cato).
  64. Presence of foreign investors in privatized firms and privatization policy.
    Journal of Economics 107(1), 71-80, September 2012 (co-authored with Ming Hsin Lin).
  65. Price versus quantity in a mixed duopoly.
    Economics Letters 116(2), 174-177, August 2012 (co-authored with Akira Ogawa).
  66. Market structure and privatization policy under international competition.
    Japanese Economic Review63(2), 244-258, June 2012 (co-authored with Yoshihiro Tomaru).
  67. Welfare consequences of an asymmetric regulation in mixed Bertrand duopoly.
    Economics Letters 115(1), 94-96, April 2012.
  68. Privatization waves.
    Manchester School 78(6), 609-625, December 2010 (co-authored with Daisuke Shimizu).
  69. What role should public enterprises play in free-entry markets?
    Journal of Economics 101(3), 213-230, November 2010 (co-authored with Hiroaki Ino).
  70. On the robustness of private leadership in mixed duopoly.
    Australian Economic Papers 49(2), 149-160, June 2010 (co-authored with Akira Ogawa).
  71. Privatization and entries of foreign enterprises in a differentiated industry.
    Journal of Economics 98(3), 203-220, December 2009 (co-authored with Noriaki Matsushima and Ikuo Ishibashi).
  72. Mixed oligopoly and spatial agglomeration in quasi-linear city.
    Economics Bulletin, 29(4), 2722-2729, October 2009 (co-authored with Takeshi Ebina and Daisuke Shimizu).
  73. R&D competition between public and private sectors.
    European Economic Review 50(6), 1347-1366, August 2006 (co-authored with Ikuo Ishibashi).
  74. Mixed oligopoly, foreign firms, and location choice.
    Regional Science and Urban Economics 36(6), 753-772, November 2006 (co-authored with Noriaki Matsushima).
  75. Mixed oligopoly at free entry markets.
    Journal of Economics 84(1), 27-48, February 2005 (co-authored with Osamu Kanda).
  76. Endogenous cost differentials between public and private enterprises: A mixed duopoly approach.
    Economica 71(284), 671-688, November 2004 (co-authored with Noriaki Matsushima).
  77. Endogenous role in mixed markets: A two production period model.
    Southern Economic Journal70(2), 403-413, October 2003.
  78. Stackelberg mixed duopoly with a foreign competitor.
    Bulletin of Economic Research 55(3), 275-287, July 2003.
  79. Mixed oligopoly and spatial agglomeration.
    Canadian Journal of Economics 36(1), 62-87, March 2003 (co-authored with Noriaki Matsushima).
  80. Mixed duopoly with product differentiation: Sequential choice of location.
    Australian Economic Papers 42(1), 18-34, March 2003 (co-authored with Noriaki Matsushima).
  81. Partial privatization in mixed duopoly.
    Journal of Public Economics 70(3), 473-483, December 1998.

    82. Anti-Trust, Economic Regulation and Public Policy in Oligopoly Markets

  82. Entry license tax: Stackelberg versus Cournot,
    Journal of Institutional and Theoretical Economics 175(2), 258-271, June 2019 (co-authored with Susumu Cato).
  83. A Negative effect of cost-reducing Public investment: The role of firms' entry.
    Economic Record 95(308), 81-89, 2019 (co-authored with Atsushi Yamagishi).
  84. Lobbying for regulation reform by industry leaders.
    Journal of Regulatory Economics 52(1), 63-76, August 2017 (co-authored with Atsushi Yamagishi).
  85. Comparison between specific taxation and volume quotas in a free entry Cournot oligopoly,
    Journal of Economics 113(2), 125-132, October 2014 (co-authored with Yasunori Okumura).
  86. Merger and entry-license tax.
    Economics Letters 119(1), 11-13, April 2013 (co-authored Susumu Cato).
  87. Congestion-reducing investments and economic welfare in a Hotelling model.
    Economics Letters 96(2), 161-167, 2007 (co-authored with Noriaki Matsushima).
  88. Tax effects in a model of product differentiation: A note.
    Journal of Economics 89(1), 75-82, May 2006 (co-authored with Minoru Kitahara).
  89. A note on the excess entry theorem in spatial markets.
    International Journal of Industrial Organization 24(5), 1071-1076, September 2006 (co-authored with Makoto Okamura).
  90. Equilibrium number of firms and economic welfare in a spatial price discrimination model.
    Economics Letters 90(3), 396-401, 2006 (co-authored with Makoto Okamura).
  91. Cartel stability in a delivered pricing oligopoly.
    Journal of Economics 86(3), 259-292, December 2005 (co-authored with Noriaki Matsushima).
  92. Competition-accelerating public investments.
    Australian Economic Papers 44(3), 269-274, September 2005.
  93. Strategic complementarity in direct investments.
    Review of Development Economics 8(4), 583-596, November 2004.
  94. Consumer-benefiting exclusive territories.
    Canadian Journal of Economics 36(4), 1007-1025, November 2003.
  95. Entry regulation and social welfare with an integer problem.
    Journal of Economics (Zeitschrift für Nationalökonomie) 71(1), 47-58, February 2000.
  96. Cournot duopoly with multi-period competition: Inventory as a coordination device.
    Australian Economic Papers 38(3), 189-202, September 1999.

    97. R&D Competition, Technology Choice, and Network Externality

  97. Eco-technology licensing by a foreign innovator and privatization policy in a polluting mixed duopoly.
    Asia-Pacific Journal of Accounting and Economics25(3-4), 433-448, May 2018 (co-authored with Seung-Leul Kim and Sang-Ho Lee).
  98. Welfare properties of strategic R&D investments in Hotelling models.
    Economics Letters 115(3), 465-468, June 2012 (co-authored with Noriaki Matsushima).
  99. Market competition, R&D and firm profits in asymmetric oligopoly.
    Journal of Industrial Economics 59(3). 484-505, 2011 (co-authored with Junichiro Ishida and Noriaki Matsushima).
  100. When small firms fight back against large firms in R&D activities.
    B.E. Journal of Economic Analysis & Policy 10(1)(Topics), Article 81, September 2010 (co-authored with Noriaki Matsushima).
  101. Location equilibrium with asymmetric firms: the role of licensing.
    Journal of Economics 99(3), 267-277, 2010 (co-authored with Noriaki Matsushima and Giorgos Stamatopoulos).
  102. Realized cost based subsidies for strategic R&D investments with ex ante and ex post asymmetries.
    Japanese Economic Review 57(3), 438-448, September 2006 (co-authored with Minoru Kitahara).
  103. Strategic R&D investments with uncertainty.
    Economics Bulletin 12(1), 1-7, June 2003.
  104. Endogenous timing in the switching of technology with Marshallian externalities.
    Journal of Economics (Zeitschrift für Nationalökonomie) 63(1), 41-56, February 1996 (co-authored with Masako Ueda).

    105. Spatial Competition and Product Differentiation

  105. Locating outside a linear city can benefit consumers.
    Journal of Regional Science 52(3), 420-432, August 2012 (co-authored with Noriaki Matsushima).
  106. Spatial Cournot competition and transportation costs in a circular city.
    Annals of Regional Science 48(1), 33-44, February 2012 (co-authored with Noriaki Matsushima).
  107. Spatial Cournot equilibria in a quasi-linear city.
    Papers in Regional Science 90(3), 613-628, August 2011 (co-authored with Takeshi Ebina and Daisuke Shimizu).
  108. Equilibrium location and economic welfare in delivered pricing oligopoly.
    Economics Bulletin29(2), 761-769, May 2009 (co-authored with Daisuke Shimizu).
  109. Cost differentials and mixed strategy equilibria in a Hotelling model.
    Annals of Regional Science 43(1), 215-234, March 2009 (co-authored with Noriaki Matsushima).
  110. Noncooperative shipping Cournot duopoly with linear-quadratic transport costs and circular space.
    Japanese Economic Review 59(4), 498-518, December 2008 (co-authored with Daisuke Shimizu).
  111. Cournot and Bertrand in shipping models with circular markets.
    Papers in Regional Science 85(4), 585-598, 2006 (co-authored with Daisuke Shimizu).
  112. Spatial Cournot competition and economic welfare: A note.
    Regional Science and Urban Economics 35(6), 658-670, November 2005 (co-authored with Daisuke Shimizu).
  113. Partial agglomeration or dispersion in spatial Cournot competition.
    Southern Economic Journal 72(1), 224-235, July 2005 (co-authored with Takao Ohkawa and Daisuke Shimizu).
  114. Economic welfare in delivered pricing duopoly: Bertrand and Cournot.
    Economics Letters 89(1), 112-119, 2005 (co-authored with Daisuke Shimizu).
  115. Equilibria for circular spatial Cournot markets.
    Economics Bulletin 18(1), 1-9, August 2003 (co-authored with Daisuke Shimizu).

    116. Endogenous Timing in Oligopolies

  116. Randomized strategy equilibrium in the action commitment game with costs of leading.
    Operations Research Letters 39(2), 115-117, March 2011 (co-authored with Takeshi Murooka and Okira Ogawa).
  117. Payoff dominance and risk dominance in the observable delay game: A note.
    Journal of Economics     97(3), 265-272, July 2009 (co-authored with Akira Ogawa).
  118. Market instability in a Stackelberg duopoly.
    Journal of Economics (Zeitschrift für Nationalökonomie) 75(3), 199-210, April 2002.
  119. Quantity-setting oligopoly with endogenous sequencing.
    International Journal of Industrial Organization 17(2), 289-296, February 1999.
  120. A Two-Stage Price-setting Duopoly: Bertrand or Stackelberg.
    Australian Economic Papers 37(2), 103-118, June 1998.
  121. How many firms become leaders?.
    Australian Economic Papers 36, 1-13, June 1997.
  122. Two-stage Cournot duopoly with inventory costs.
    Japanese Economic Review 48(1), 81-89, January 1997.
  123. Endogenous timing in Cournot duopoly games.
    Proceedings of APORS'94, pp. 235-242, 1995.
  124. Endogenous timing in multi-stage duopoly games.
    Japanese Economic Review vol. 46(3), pp. 257-265, September 1995.

    125. Business Economics

  125. Payoff interdependence and the multi-store paradox,
    Asia-Pacific Journal of Accounting and Economics vol. 23(3), 256-267, July 2016. (co-authored with Kosuke Hirose).
  126. Should firms employ personalized pricing?
    Journal of Economics and Management Strategy 24(4). 887-903, October 2015 (co-authored with Noriaki Matsushima).
  127. Endogenous flexibility in flexible manufacturing system.
    Bulletin of Economic Research 67(1), 1-13, January 2015 (co-authored with Daisuke Shimizu).
  128. Profit-enhancing parallel imports.
    Open Economic Review vol. 21(3), 433-447, July 2010 (co-authored with Noriaki Matsushima).
  129. Simultaneous price changes, information acquisition on common competitors, and welfare.
    Australian Economic Papers47(4), 389-395, December 2008 (co-authored work with Minoru Kitahara).

    130. Law and Economics

  130. Revelation of private information about unpaid notes in the trade credit bill system in Japan.
    Journal of Legal Studies vol. XXIV(1), pp. 165-187, January 1995 (co-authored with Marc Ryser).

Unpublished Works

    Mixed Oligopoly and Privatization of Public Enterprises

  1. Anticompetitive consequence of nationalization of a public enterprise in mixed markets
  2. Endogenous Cost Differentials, Competitiveness in Mixed Markets, and the Privatization of Public Enterprises, co-authored with Noriaki Matsushima
  3. Firms' Costs, Profits, Entries, and Innovation under Optimal Privatization Policy , co-authored with Junichi Haraguchi
  4. Optimal privatization policy in mixed Stackelberg oligopolies, co-authored with Ming Hsin Lin

    5. Antitrust and Regulation

  5. Contestable Markets, Cream Skimming, and Multiple Potential Entrants, co-authored with Ikuo Ishibashi
  6. Regulated Input Price, Vertical Separation, and Leadership at Free Entry Markets, co-authored with Noriaki Matsushima
  7. Vertical Separation and Access Charge, co-authored with Noriaki Matsushima

    8. Spatial Competition

  8. Cost Uncertainty and Spatial Agglomeration (contimum choice version), co-authored with Noriaki Matsushima, the first version of the paper is written in 2002.
  9. Evolution of Competitive Equilibrium with Endogenous Product Differentiation, co-authored with Noriaki Matsushima and Tetsuo Yamamori
  10. Multiple Long-Run Equilibria in a Spatial Cournot Model and Welfare Implications, co-authored with Takanori Ago

    11. R&D, Lisencing, and Network Externality

  11. Steady R&D by Industry Leaders and Innovative R&D by Industry Followers, co-authored with Yasuhiro Arai
  12. Patent Licensing, Bargaining, and Product Positioning, co-authored with Noriaki Matsushima.

Academic Activities

Associate Editor, Journal of Economics
Associate Editor, Asia-Pacific Journal of Accounting and Economics
Associate Editor, Economic Modelling
Member, Editorial Board, Papers in Regional Science

Experience of Government Committees and Advisory Boards

METI(Ministry of Economy, Trade and Industry)

Member, Procurement Price Calculation Committee
Member, Strategic Policiy Committee, Advisory Committee for Natural Resources and Energy.
Member, Electricity Systems Reform Subcommittee, Strategic Policiy Committee, Advisory Committee for Natural Resources and Energy.
Member, Electricity Supply-Demand Verification Subcommitte, Strategic Policiy Committee, Advisory Committee for Natural Resources and Energy.
Member, Subcommittee on the Establishment of Infrastructure for a Natural Gas Shift, Strategic Policiy Committee, Advisory Committee for Natural Resources and Energy.
Member, Market Monitoring Subcommittee, Strategic Policiy Committee, Advisory Committee for Natural Resources and Energy.
Member, Energy Efficiency and Conservation Subcommitte, Committee on Energy Efficiency and Renewble Energy, Advisory Committee for Natural Resources and Energy.
Member, WG on Classification Standards for Plants and Other Facilities, Energy Efficiency and Conservation Subcommitte, Committee on Energy Efficiency and Renewble Energy, Advisory Committee for Natural Resources and Energy
Member, Expert Committee on Reviewing Electricity Rate, Electricity and Gas Industry Committee, Advisory Committee for Natural Resources and Energy
Member, WG on Tendering Systems of Thermal Power, Expert Committee on Reviewing Electricity Rate, Electricity and Gas Industry Committee, Advisory Committee for Natural Resources and Energy
Member, WG for Reviewing the Accounting System Concerning the Decommissioning of Nuclear, Expert Committee on Reviewing Electricity Rate, Electricity and Gas Industry Committee, Advisory Committee for Natural Resources and Energy
Member, Advisory Council for Regulation of Electric Power Industry.
Member, Electric Power Industry Committee, Advisory Committee for Natural Resource and Energy.
Member, Committee to Nuclear Power, Electric Power Industry Committee, Advisory Committee for Natural Resource and Energy
Member, Subcommittee to Nuclear Power under Liberalization of Electricity Market, Committee to Nuclear Power Committee Electric Power Industry Committee, Advisory Committee for Natural Resource and Energy
Member, Subcommittee to Evaluate System Reform, Electric Power Industry Committee, Advisory Committee for Natural Resource and Energy
Member, Subcommittee to Evaluate System Reform, Gas Energy Committee, Advisory Committee for Natural Resource and Energy
Member, Subcommittee to Rule Formulation for Gas Energy Markets, Gas Energy Committee, Advisory Committee for Natural Resource and Energy
Member, Subcommittee to Renewable Energy Portfolio Standard, New Energy Committee, Advisory Committee for Natural Resource and Energy
Member, Subcommittee to Gas Policy, Gas Energy Committee, Advisory Committee for Natural Resource and Energy
Member, Subcommittee to Competition Policy, Committee of New Gross Policy, Advisory Committee for Industrial Structure
Member, WG of Energy Market, Subcommittee to Competition Policy, Committee of New Gross Policy, Advisory Committee for Industrial Structure
Member, WG of Institution and Practice for Gas Markets, Subcommittee to Gas Policy, Gas Energy Committee, Advisory Committee for Natural Resource and Energy
Member, WG of Fair Trade in Electricity Markets, Electric Power Industry Committee, Advisory Committee for Natural Resource and Energy
Member, WG of Fair Use of Electric System, Subcommittee to Basic Problem in Electric Power Industry, Electric Power Industry Committee, Advisory Committee for Natural Resource and Energy
Member, WG of Incentives for Investment in Nuclear Power, Electric Power Industry Committee, Advisory Committee for Natural Resource and Energy
Member, WG of Rule Formulation for Electric Power Markets, Electric Power Industry Committee, Advisory Committee for Natural Resource and Energy
Member, SG of Smart Mater
Member, SG of Smart Community
Member, SG of Water Powers in Electric Power Industry
Member, SG of Ultra Low Carbon Emission Society
Member, WG of Electric Power Fee in SG of Ultra Low Carbon Emission Society
Member, SG of Smart Mater of Electric Use
Member, SG of Study on Crude Oil Price
Member, WG of Study on Recent Flacutuation of Crude Oil Price in SG of Study on Crude Oil Price

Cabinet Office, Government of Japan

Member, Regulatory Reform Council
WG of Energy Regulation, Comittee of Regulation and Institution Reform, Government Revitalization Unit
Member, WG of Green Innovation, Comittee of Regulation and Institution Reform, Government Revitalization Unit
Member, WG of IT, Energy and Transportation, Council for the Promotion of Regulatory Reform

Cabinet Secretariat

Member, TEPCO Management and Finance Investigation Committee
Member, WG of Regulation Reform, IT Task Force

Fair Trade Commission

Member, SG on Regulation and Antitrust
SG on Cell Phone Industry

Ministry of Internal Affairs and Communications

Member, SG on Promotion ofIntensive Use and Development in Internet by IPv6.
Member, WG on the Problems in Access and ISP Business, SG on Promotion ofIntensive Use and Development in Internet by IPv6.
Member, SG on Price Cap and Regulation in Telecommunication
Member, SG on Internet Industry
Member, WG of Transition to IPv6 and Business of ISP, SG on Internet Industry
Member, SG on Neutrality of Network
Member, WG of Evaluation for Competition, SG on Neutrality of Network
Member, SG on Business Model of Network Industry

National Police Agency

Member, Committee of Inspection of Procurement
Member, Committee of Improvement of Administration

Ministry of Environment

Member, SG on Promotion of Low Emission Vehicles
Member, SG on Environmental Tax for Global Warming

Nuclear Damage Liability Facilitation Fund

Member, Management Committee

Electric Power System Council of Japan (ESCJ)

Member, Fair Use Committee

Organization for Cross-Regional Coordination of Transmission Operation, Japan (OCCTO)

Council Member
Member, Comittee of Capacity Payment
Member, Comittee of Operation of Interconnection and Area Transmission Lines
Member, Comittee of Electric Power Supply Reliability
Member, Comittee of Electoric Power Reserve Market

Japan Electric Power Exchange (JEPX)

Member, Special Committee on Promotion of Trading Volume

Workshops

ISS Industrial Organization Workshop